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Record W2897771072 · doi:10.1109/tcst.2018.2873549

Detecting the Direction of Information Flow in Instantaneous Relations Between Variables

2018· article· en· W2897771072 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueIEEE Transactions on Control Systems Technology · 2018
Typearticle
Languageen
FieldComputer Science
TopicBlind Source Separation Techniques
Canadian institutionsUniversity of Alberta
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsCausality (physics)Process (computing)Variable (mathematics)Computer scienceCausal structureInformation flowAlgorithmData miningMultivariate statisticsRelation (database)Set (abstract data type)Flow (mathematics)MathematicsMachine learning

Abstract

fetched live from OpenAlex

Data-based causality analysis tries to detect the true structural relations between measurements of complex multivariate systems. The detected relations should correspond to the true structure of the underlying data generation process. Even though there are many methodologies developed to extract causal relations from data, existence of instantaneous correlation between some variables in the data set, requires special care in order to correctly do the analysis. It is required to detect the instantaneous relations between variables as a prerequisite for subsequent causality analysis. Not only is detection of instantaneous relations important, but it is also necessary to discover the direction of information flow in the instantaneous relations. This piece of information plays a vital role in selection of correct modeling structure to achieve a reliable result about causal relations between variables. Using prior knowledge about the process or blind mathematical transformations are usual solutions for this problem in the literature. However, there is a lack of reliable mathematical methodologies to address this issue completely based on data analysis. This brief proposes a method to detect the direction of instantaneous causal relations between variables and supports it through simulation and case studies. The proposed algorithm uses a third variable as an instrument to detect the direction of information flow between any two instantaneously correlated variables. The instrument variable is required to meet some conditions for the algorithm to work; however, the application of the algorithm does not require any prior information about the process.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.986
Threshold uncertainty score0.431

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.008
GPT teacher head0.226
Teacher spread0.218 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it